share_tracking

const {
    schedule
} = require("@netlify/functions");
const nodemailer = require("nodemailer");
const {
    GoogleSpreadsheet
} = require("google-spreadsheet");
const axios = require("axios");
const papa = require("papaparse");

const doc = new GoogleSpreadsheet(process.env.GOOGLE_SHEET_ID);

const transporter = nodemailer.createTransport({
    auth: {
        pass: process.env.EMAIL_PASSWORD,
        user: process.env.EMAIL_ADDRESS
    },
    host: "smtp.porkbun.com",
    pool: true,
    port: 587,
    secure: false // true for 465, false for other ports
});

const shipping_companies = {
    GLS: {
        name: "GLS",
        url: "https://www.gls-pakete.de/en/parcel-tracking?trackingNumber="
    },
    NLPOST: {
	name: "PostNL",
	url: "https://postnl.post/details/?barcode="
    },
    UPS_SAVER: {
        name: "UPS",
        url: "https://wwwapps.ups.com/WebTracking/track?loc=en_EN&track=yes&trackNums="
    }
};

const title_case = function (str) {
    return str.toLowerCase().replace(/\b\w/g, (s) => s.toUpperCase());
};

const get_new_shipments = function (zencsv, shipped_refs) {
    const sorted = zencsv.data.sort(
        function (a, b) {
            return new Date(a.created_at) - new Date(b.created_at);
        }
    );
    const filtered = sorted.filter((obj) => {
        return !shipped_refs.includes(obj.reference);
    });
    return filtered;
};

const email_tracking_numbers = async function (obj) {
        console.log(
            "Tracking code:", obj.shipment_tracking_number,
            ", shipping company:", obj.shipment_shipping_option,
            ", customer's email:", obj.shipping_address_email
        );
	// didn't want to spend time understanding high-level functions, so shipping_companies is injected here
        const company_labels = Object.keys(shipping_companies);
        if (company_labels.includes(obj.shipment_shipping_option)) {
            console.log("Adding row to sheet, reference:", obj.reference);
            const shipping_company = shipping_companies[obj.shipment_shipping_option];
            console.log("Sending email to", obj.shipping_address_email);
            const mail_res = await transporter.sendMail({
                from: "book@k.com",
                to: "santiago@k.com",
                // to: obj.shipping_address_email,
                // bcc: "santiago@k.com",
                subject: "Your book is on the way!",
                html: "<p>Dear " + obj.shipping_address_name + ",</p>" +
                    "<p>Your copy of <em>Urology: the last review</em> is on the way! " +
                    "You can track your " + shipping_company.name + " parcel with the tracking number <a href='" +
                    shipping_company.url + obj.shipment_tracking_number + "'>" +
                    obj.shipment_tracking_number + "</a>." +
                    "<p>I hope you enjoy the book, and wish you all the best for your studies!</p>" +
                    "<p>Best regards,</p>" +
                    "<p>Inês Santiago @knowuro</p>"
            });
		if (mail_res.messageId) {
                    console.log("Message sent: %s", mail_res.messageId);
		} else {
		    console.log("Couldn't send email", mail_res);
		}
		return mail_res;
        } else {
            console.log(`I don't know the ${obj.shipment_shipping_option} shipping provider`);
            const mail_res = await transporter.sendMail({
                from: "book@k.com",
                to: "santiago@k.com",
                subject: "Cliente não foi avisado",
                text: "Não sei como lidar com " + obj.shipment_shipping_option + " na encomenda " + obj.reference + "."
            });
	return mail_res;
        }
};

const handler = async function (event, context) {
    console.log("Hello! Just doing my scheduled job");
    try {
	await doc.useServiceAccountAuth({
	    client_email: process.env.GOOGLE_SERVICE_ACCOUNT_EMAIL,
	    private_key: process.env.GOOGLE_PRIVATE_KEY.replace(/\\n/g, "\n")
	});
        await doc.loadInfo();
        const sheet = doc.sheetsByTitle.zenorders;
	console.log("Fetching orders from Google Sheets");
        const rows = await sheet.getRows();
	console.log("Reducing rows into Array");
        const shipped_refs = rows.reduce((result, current) => {
            return result.concat(current.reference);
        }, []);
        console.log("These are", shipped_refs.length, "shipped references");
        const axiosconfig = {
            method: "get",
            url: "https://api.zenfulfillment.com/orders/export?status=SHIPPED&perPage=100",
            headers: {
                Authorization: "ZF-API " + process.env.ZF_API_KEY
            }
        };
        const zencsv = await axios(axiosconfig)
            .then((response) => {
                const parsed = papa.parse(response.data, {
                    header: true
                });
                return parsed;
            })
            .catch(function (error) {
                console.log(error);
                return transporter.sendMail({
                    from: "book@knowuro.com",
                    to: "santiago@knowuro.com",
                    subject: "Encomenda falhou!!",
                    text: error
                }, (error, info) => {
                    if (error) {
                        console.log(error);
                        return false;
                    } else {
                        console.log("Message sent: %s", info.messageId);
                        return true;
                    }
                });

                console.log(`Function failed with error: ${error}`);
                return {
                    err: error,
                    response: {
                        statusCode: 400,
                        body: `Error: ${error.message}`
                    }
                };
            });
        if (Object.keys(zencsv).includes("err")) {
            return zencsv.reponse;
        } else {
            const new_shipments = get_new_shipments(zencsv, shipped_refs);
            if (new_shipments.length > 0) {
                const results = await Promise.all(new_shipments.map(email_tracking_numbers));
                const added_rows = await sheet.addRows(new_shipments, {
                    insert: true
                });
                // FIXME: delete row in sheet for which the email failed
                if (results.every((element) => element != false)) {
                    return {
                        statusCode: 200
                    };
                } else {
                    return {
                        statusCode: 400
                    };
                }
            } else {
                console.log("FILTERED EVERYTHING, nothing to do..");
                return {
                    statusCode: 200,
                };
            }
        }
    } catch (error) {
        console.log(`Function failed with error: ${error}`);
        return {
            statusCode: 400,
            body: `Error: ${error.message}`
        };
    }
};

module.exports.handler = schedule("30 13 * * *", handler);